the stinger is about the best for higher hp because they have wider shoes and are made for w/f specs but really I wouldn't think in a class like s/a a disc would be a better choice for reliability
I can regularly put just under 30hp through a Draggin'-Skin with noooooooo problems. Best damn drum clutch on the market, bar none. Customer support from Jim Donovan @ Max-Torque cannot be beat.